Methods and Systems for Management of Shared Network Slice Instance (nsi) in a Wireless Network

3. The network management apparatus in claim 1, wherein the processing circuitry is configured to determine whether at least one other CSI is currently supported by the first NSI based on information received from an entity performing management data analytics functionality (MDAF) or network data analytics function (NWDAF).

4. The network management apparatus in claim 1, wherein the processing circuitry is configured to compare the level of the scale-in or the scale-down for the set of network resource requirements to a predetermined threshold, and based on the comparing, determine whether to modify the first NSI or to terminate the first NSI.

5. The network management apparatus in claim 1, wherein in case that the first NSI is to be modified, the processing circuitry is configured to initiate one or more NSI modification procedures for the first NSI.

6. The network management apparatus in claim 1, wherein in case that the first NSI is to be terminated, the processing circuitry is configured to deactivate the at least one other CSI to detach the at least one other CSI from the first NSI before the at least one other CSI is re-allocated to the second NSI.

7. The network management apparatus in claim 6, wherein after deactivation of the at least one other CSI and detachment of the at least one other CSI from the first NSI, the processing circuitry is configured to initiate activation procedures for the at least one other CSI as part of re-allocating the at least one other CSI to the second NSI.

8. The network management apparatus in claim 7, wherein the processing circuitry is configured to terminate the first NSI in case that the at least one other CSI is re-allocated to the second NSI.

9. The network management apparatus in claim 1, wherein the processing circuitry is configured to perform a communication service management function (CSMF).

10. The network management apparatus in claim 1, wherein the processing circuitry is configured to configure a new set of network resource requirements associated with the first NSI, before the feasibility check is performed, and perform the feasibility check based on the new set of network resource requirements.

12. The method in claim 11, further comprising determining a status of the first CSI, and and in case that the first CSI is in an active state, de-activating the first CSI, and terminating the de-activated first CSI.

13. The method in claim 11, further comprising determining whether at least one other CSI is currently supported by the first NSI based on information received from an entity performing management data analytics functionality (MDAF), or network data analytics function (NWDAF).

14. The method in claim 11, further comparing the level of the scale-in or the scale-down for the set of network resource requirements to a predetermined threshold, and based on the comparing, determining whether to modify the first NSI or to terminate the first NSI.